Tony’s Pizza guarantees all pizza deliveries within 30 minutes of the placement of orders. An agency wants to estimate the proportion of all pizzas that are delivered within 30 minutes by Tony’s. What is the most conservative estimate of the sample size that would limit the margin of error to within .02 of the population proportion for a 99% confidence interval?
Answer to relevant QuestionsRefer to Exercise 8.92. Assume that a preliminary study has shown that 93% of all Tony’s pizzas are delivered within 30 minutes. How large should the sample size be so that the 99% confidence interval for the population ...Because of inadequate public school budgets and lack of money available to teachers for classroom materials, many teachers often use their own money to buy materials used in the classrooms. A random sample of 100 public ...You want to estimate the mean number of hours that students at your college work per week. Briefly explain how you will conduct this study using a small sample. Take a sample of 12 students from your college who hold a job. ...Consider the following null and alternative hypotheses: Ho: µ = 40 versus H1: µ ≠ 40 A random sample of 64 observations taken from this population produced a sample mean of 38.4. The population standard deviation is ...Customers often complain about long waiting times at restaurants before the food is served. A restaurant claims that it serves food to its customers, on average, within 15 minutes after the order is placed. A local newspaper ...
Post your question